private void CanChangeStage()
{
if (canCut)
{
CutCommand.RaiseCanExecuteChanged();
}
else if (canFlowering)
{
FloweringStageCommand.RaiseCanExecuteChanged();
}
else if (canGrowth)
{
GrowthStageCommand.RaiseCanExecuteChanged();
}
else if (canGermination)
{
GerminationStageCommand.RaiseCanExecuteChanged();
}
else if (canSeed)
{
SeedStageCommand.RaiseCanExecuteChanged();
}
else if (canStart)
{
StartCommand.RaiseCanExecuteChanged();
}
}
internal void DeselectAllShapes()
{
foreach (IShape shape in Selected)
{
shape.IsSelected = false;
}
Selected.Clear();
DeleteSelectedShapesCommand.RaiseCanExecuteChanged();
CopyCommand.RaiseCanExecuteChanged();
CutCommand.RaiseCanExecuteChanged();
}
private void SelectedItems_CollectionChanged(object sender, System.Collections.Specialized.NotifyCollectionChangedEventArgs e)
{
if (SelectedItems.Count == 1)
{
SelectedItem = SelectedItems.First();
}
else
{
SelectedItem = null;
}
CopyCommand.RaiseCanExecuteChanged();
CutCommand.RaiseCanExecuteChanged();
PasteCommand.RaiseCanExecuteChanged();
CreateGroupCommand.RaiseCanExecuteChanged();
MoveToGroupCommand.RaiseCanExecuteChanged();
CreateNodeCommand.RaiseCanExecuteChanged();
}
/// <summary>
/// Raises commands can execute event.
/// </summary>
public virtual void UpdateCommandsCanExecute()
{
if (this.DeleteCommand != null)
{
DeleteCommand.RaiseCanExecuteChanged();
}
if (this.CutCommand != null)
{
CutCommand.RaiseCanExecuteChanged();
}
if (this.CopyCommand != null)
{
CopyCommand.RaiseCanExecuteChanged();
}
if (this.PasteCommand != null)
{
PasteCommand.RaiseCanExecuteChanged();
}
}
internal void SelectShape(IShape shape, bool clearSelection)
{
if (shape == null)
{
return;
}
if (clearSelection)
{
DeselectAllShapes();
Selected.Add(shape);
shape.IsSelected = true;
DeleteSelectedShapesCommand.RaiseCanExecuteChanged();
CopyCommand.RaiseCanExecuteChanged();
CutCommand.RaiseCanExecuteChanged();
}
else
{
Selected.Add(shape);
shape.IsSelected = true;
DeleteSelectedShapesCommand.RaiseCanExecuteChanged();
CopyCommand.RaiseCanExecuteChanged();
CutCommand.RaiseCanExecuteChanged();
}
}